Wrong again... and I do not think GM ever used New Process trannys, did they...?

I should state that this is just your typical, production Hemi 4-speed - nothing otherwise unusual about it - and the situation could just as likely involve a 23-spline, automatic 727 or 904, etc. The reason for it being a blank drive train piece is not specific that this one happens to be an 18-spline (obviously, it's from somewhere between 1968 and,mmmmmmm, 1974(?) - I'm not sure when Chrysler bailed on New Process - anybody know when they did ...?